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Finding the Fourth Proportional to 152,783.90, 210,831.81 and 84,797.58

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Solution

The fourth proportional to 152,783.90, 210,831.81 and 84,797.58 is: 117,015.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,783.90 : 210,831.81 = 84,797.58 : x
  2. Step 2: Convert to fraction form
    152,783.90/210,831.81 = 84,797.58/x
  3. Step 3: Cross multiply
    152,783.90x = 210,831.81 × 84,797.58
  4. Step 4: Simplify right side
    152,783.90x = 17,878,028,224.63
  5. Step 5: Solve for x
    x = 17,878,028,224.63/152,783.90
  6. Step 6: Final answer
    x = 117,015.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.